Multifunction injector and relative combustion process for metallurgical treatment in an electric arc furnace
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United States of America Patent
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Nov 3, 2009
Grant Date -
Jun 12, 2008
app pub date -
Feb 13, 2006
filing date -
Feb 18, 2005
priority date (Note) -
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Abstract
A multifunction injector (10, 11, 12) comprising a De Laval nozzle (20) adapted to act as a burner at subsonic or supersonic speed, combined with a plurality of nozzles (31, 32) for fuel and comburant respectively, arranged in two rings, concentric and co-axial to said De Laval nozzle (20) and externally protected by a specifically shaped protection cavity (40).
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